Bài 1 Tìm x
a) \(\frac{1}{4}\) x \(\frac{2}{6}\) x \(\frac{3}{5}\) x \(\frac{14}{10}\)x .......x \(\frac{30}{62}\) x \(\frac{31}{64}\)= 2x
b) \(\frac{4^5+4^5+4^5+4^5}{3^5+3^5+3^5}\) + \(\frac{6^5+6^5+6^5+6^5+6^5+6^5}{2^5+2^5}\)= 2x
c)\(\left(\frac{1}{2}\right)^x\) + \(\left(\frac{1}{2}\right)^{x+4}\) = 17
d) 2x + 2x+1 + 2x+2 + 2x+3 = 120